./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97ff03298340a9336a03e9d19ed0d00b1afc963b5be61528526d9d1b67b2a323 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:00,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:00,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:31:00,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:00,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:00,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:00,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:00,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:00,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:00,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:00,629 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:00,630 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:00,630 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:00,631 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:00,631 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:00,632 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:00,632 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:00,633 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:00,633 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:00,634 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:00,634 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:00,639 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:00,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:00,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:00,642 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:00,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:00,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:00,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:00,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:00,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:00,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:00,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:00,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:00,647 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:00,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:00,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:00,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:00,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:00,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:00,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:00,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:00,650 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:00,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:00,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:00,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:00,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:00,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:00,653 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97ff03298340a9336a03e9d19ed0d00b1afc963b5be61528526d9d1b67b2a323 [2023-11-23 21:31:00,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:01,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:01,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:01,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:01,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:01,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:04,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:04,552 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:04,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:04,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/8c861dfb6/322bf0c95f574dc1b333daf17fa05f07/FLAG353bde1b9 [2023-11-23 21:31:04,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/8c861dfb6/322bf0c95f574dc1b333daf17fa05f07 [2023-11-23 21:31:04,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:04,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:04,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:04,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:04,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:04,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432ecc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04, skipping insertion in model container [2023-11-23 21:31:04,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:04,810 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i[916,929] [2023-11-23 21:31:04,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:04,883 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:04,898 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i[916,929] [2023-11-23 21:31:04,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:04,945 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:04,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04 WrapperNode [2023-11-23 21:31:04,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:04,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:04,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:04,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:04,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:04,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,007 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 146 [2023-11-23 21:31:05,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:05,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:05,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:05,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:05,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,056 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:05,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:05,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:05,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:05,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (1/1) ... [2023-11-23 21:31:05,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:05,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:05,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:05,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:05,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:05,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:05,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:05,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:05,249 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:05,251 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:05,591 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:05,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:05,900 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:05,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:05 BoogieIcfgContainer [2023-11-23 21:31:05,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:05,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:05,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:05,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:05,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:04" (1/3) ... [2023-11-23 21:31:05,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5144777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:05, skipping insertion in model container [2023-11-23 21:31:05,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:04" (2/3) ... [2023-11-23 21:31:05,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5144777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:05, skipping insertion in model container [2023-11-23 21:31:05,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:05" (3/3) ... [2023-11-23 21:31:05,920 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:05,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:05,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:06,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:06,043 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@648f3c57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:06,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:31:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 21:31:06,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:06,066 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:06,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:06,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1567128467, now seen corresponding path program 1 times [2023-11-23 21:31:06,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890206774] [2023-11-23 21:31:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:06,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:31:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:06,876 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:31:06,878 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:31:06,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:31:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:31:06,888 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:31:06,898 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:31:07,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:31:07 BoogieIcfgContainer [2023-11-23 21:31:07,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:31:07,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:31:07,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:31:07,029 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:31:07,030 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:05" (3/4) ... [2023-11-23 21:31:07,037 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:31:07,040 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:31:07,042 INFO L158 Benchmark]: Toolchain (without parser) took 2450.05ms. Allocated memory is still 188.7MB. Free memory was 140.9MB in the beginning and 118.1MB in the end (delta: 22.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,043 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:07,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.45ms. Allocated memory is still 188.7MB. Free memory was 140.3MB in the beginning and 128.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.16ms. Allocated memory is still 188.7MB. Free memory was 128.3MB in the beginning and 126.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,047 INFO L158 Benchmark]: Boogie Preprocessor took 51.47ms. Allocated memory is still 188.7MB. Free memory was 126.2MB in the beginning and 124.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,053 INFO L158 Benchmark]: RCFGBuilder took 842.54ms. Allocated memory is still 188.7MB. Free memory was 124.1MB in the beginning and 88.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,055 INFO L158 Benchmark]: TraceAbstraction took 1116.59ms. Allocated memory is still 188.7MB. Free memory was 87.9MB in the beginning and 118.1MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:07,056 INFO L158 Benchmark]: Witness Printer took 11.53ms. Allocated memory is still 188.7MB. Free memory was 118.1MB in the beginning and 118.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:07,061 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.45ms. Allocated memory is still 188.7MB. Free memory was 140.3MB in the beginning and 128.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.16ms. Allocated memory is still 188.7MB. Free memory was 128.3MB in the beginning and 126.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.47ms. Allocated memory is still 188.7MB. Free memory was 126.2MB in the beginning and 124.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 842.54ms. Allocated memory is still 188.7MB. Free memory was 124.1MB in the beginning and 88.5MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1116.59ms. Allocated memory is still 188.7MB. Free memory was 87.9MB in the beginning and 118.1MB in the end (delta: -30.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 11.53ms. Allocated memory is still 188.7MB. Free memory was 118.1MB in the beginning and 118.1MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 43, overapproximation of bitwiseOr at line 51. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 16; [L23] signed short int var_1_7 = 32; [L24] signed short int var_1_8 = 20113; [L25] signed short int var_1_9 = 100; [L26] signed char var_1_10 = 100; [L27] signed char var_1_11 = -1; [L28] signed char var_1_12 = 16; [L29] unsigned char var_1_13 = 1; [L30] unsigned char var_1_15 = 0; [L31] unsigned char var_1_16 = 1; [L32] unsigned short int var_1_18 = 10; [L33] unsigned short int var_1_19 = 256; [L34] signed long int var_1_20 = 32; [L35] signed long int var_1_21 = 127; [L36] signed short int var_1_22 = 128; [L105] isInitial = 1 [L106] FCALL initially() [L107] COND TRUE 1 [L108] FCALL updateLastVariables() [L109] CALL updateVariables() [L70] var_1_7 = __VERIFIER_nondet_short() [L71] CALL assume_abort_if_not(var_1_7 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=20113, var_1_9=100] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_7 >= -1) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=20113, var_1_9=100] [L72] CALL assume_abort_if_not(var_1_7 <= 32766) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=20113, var_1_9=100] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_7 <= 32766) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=20113, var_1_9=100] [L73] var_1_8 = __VERIFIER_nondet_short() [L74] CALL assume_abort_if_not(var_1_8 >= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=100] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_8 >= 16383) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=100] [L75] CALL assume_abort_if_not(var_1_8 <= 32766) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=100] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_8 <= 32766) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=100] [L76] var_1_9 = __VERIFIER_nondet_short() [L77] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L78] CALL assume_abort_if_not(var_1_9 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_9 <= 16383) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L79] var_1_11 = __VERIFIER_nondet_char() [L80] CALL assume_abort_if_not(var_1_11 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_11 >= -63) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L81] CALL assume_abort_if_not(var_1_11 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_11 <= 63) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=16, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L82] var_1_12 = __VERIFIER_nondet_char() [L83] CALL assume_abort_if_not(var_1_12 >= -31) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_12 >= -31) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L84] CALL assume_abort_if_not(var_1_12 <= 32) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_12 <= 32) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=0, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L85] var_1_15 = __VERIFIER_nondet_uchar() [L86] CALL assume_abort_if_not(var_1_15 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_15 >= 1) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L87] CALL assume_abort_if_not(var_1_15 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_15 <= 1) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L88] var_1_16 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_16 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_16 >= 1) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L90] CALL assume_abort_if_not(var_1_16 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(var_1_16 <= 1) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=256, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L91] var_1_19 = __VERIFIER_nondet_ushort() [L92] CALL assume_abort_if_not(var_1_19 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_19 >= 0) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L93] CALL assume_abort_if_not(var_1_19 <= 65534) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(var_1_19 <= 65534) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=127, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L94] var_1_21 = __VERIFIER_nondet_long() [L95] CALL assume_abort_if_not(var_1_21 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=0, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(var_1_21 >= -2147483648) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=0, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L96] CALL assume_abort_if_not(var_1_21 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=0, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(var_1_21 <= 2147483647) VAL [isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=10, var_1_19=0, var_1_1=16, var_1_20=32, var_1_21=0, var_1_22=128, var_1_7=1, var_1_8=16385, var_1_9=16383] [L109] RET updateVariables() [L110] CALL step() [L40] var_1_18 = var_1_19 [L41] var_1_20 = var_1_21 [L42] var_1_22 = var_1_12 [L43] COND TRUE 127.5f > var_1_20 [L44] var_1_13 = (var_1_15 && var_1_16) [L48] COND FALSE !(var_1_18 == var_1_7) [L51] EXPR (32 * -25) | var_1_22 [L51] COND FALSE !(((32 * -25) | var_1_22) >= var_1_11) [L57] COND TRUE \read(var_1_13) [L58] COND TRUE var_1_10 > var_1_22 [L59] COND TRUE \read(var_1_13) [L60] var_1_1 = (var_1_7 - (var_1_8 - var_1_9)) [L110] RET step() [L111] CALL, EXPR property() [L101] EXPR (var_1_13 ? ((var_1_10 > var_1_22) ? (var_1_13 ? (var_1_1 == ((signed short int) (var_1_7 - (var_1_8 - var_1_9)))) : (var_1_1 == ((signed short int) var_1_18))) : (var_1_1 == ((signed short int) 8))) : 1) && ((var_1_18 == var_1_7) ? (var_1_10 == ((signed char) (var_1_11 + (var_1_12 + -25)))) : ((((32 * -25) | var_1_22) >= var_1_11) ? (var_1_13 ? (var_1_10 == ((signed char) var_1_12)) : 1) : 1)) [L101] EXPR (var_1_18 == var_1_7) ? (var_1_10 == ((signed char) (var_1_11 + (var_1_12 + -25)))) : ((((32 * -25) | var_1_22) >= var_1_11) ? (var_1_13 ? (var_1_10 == ((signed char) var_1_12)) : 1) : 1) [L101] EXPR (32 * -25) | var_1_22 [L101] EXPR (var_1_18 == var_1_7) ? (var_1_10 == ((signed char) (var_1_11 + (var_1_12 + -25)))) : ((((32 * -25) | var_1_22) >= var_1_11) ? (var_1_13 ? (var_1_10 == ((signed char) var_1_12)) : 1) : 1) [L101] EXPR (var_1_13 ? ((var_1_10 > var_1_22) ? (var_1_13 ? (var_1_1 == ((signed short int) (var_1_7 - (var_1_8 - var_1_9)))) : (var_1_1 == ((signed short int) var_1_18))) : (var_1_1 == ((signed short int) 8))) : 1) && ((var_1_18 == var_1_7) ? (var_1_10 == ((signed char) (var_1_11 + (var_1_12 + -25)))) : ((((32 * -25) | var_1_22) >= var_1_11) ? (var_1_13 ? (var_1_10 == ((signed char) var_1_12)) : 1) : 1)) [L101-L102] return (((((var_1_13 ? ((var_1_10 > var_1_22) ? (var_1_13 ? (var_1_1 == ((signed short int) (var_1_7 - (var_1_8 - var_1_9)))) : (var_1_1 == ((signed short int) var_1_18))) : (var_1_1 == ((signed short int) 8))) : 1) && ((var_1_18 == var_1_7) ? (var_1_10 == ((signed char) (var_1_11 + (var_1_12 + -25)))) : ((((32 * -25) | var_1_22) >= var_1_11) ? (var_1_13 ? (var_1_10 == ((signed char) var_1_12)) : 1) : 1))) && ((127.5f > var_1_20) ? (var_1_13 == ((unsigned char) (var_1_15 && var_1_16))) : (var_1_13 == ((unsigned char) ((var_1_20 >= var_1_20) || var_1_15))))) && (var_1_18 == ((unsigned short int) var_1_19))) && (var_1_20 == ((signed long int) var_1_21))) && (var_1_22 == ((signed short int) var_1_12)) ; [L111] RET, EXPR property() [L111] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=0, var_1_19=0, var_1_1=-1, var_1_20=0, var_1_21=0, var_1_22=32, var_1_7=1, var_1_8=16385, var_1_9=16383] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=100, var_1_11=-1, var_1_12=32, var_1_13=1, var_1_15=1, var_1_16=1, var_1_18=0, var_1_19=0, var_1_1=-1, var_1_20=0, var_1_21=0, var_1_22=32, var_1_7=1, var_1_8=16385, var_1_9=16383] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:31:07,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97ff03298340a9336a03e9d19ed0d00b1afc963b5be61528526d9d1b67b2a323 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:09,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:10,140 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:31:10,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:10,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:10,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:10,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:10,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:10,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:10,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:10,202 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:10,203 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:10,203 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:10,205 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:10,205 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:10,206 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:10,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:10,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:10,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:10,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:10,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:10,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:10,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:10,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:10,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:10,211 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:31:10,211 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:31:10,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:10,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:10,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:10,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:10,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:31:10,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:10,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:10,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:10,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:10,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:10,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:10,216 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:31:10,217 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:10,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:10,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:10,218 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:10,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:10,218 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97ff03298340a9336a03e9d19ed0d00b1afc963b5be61528526d9d1b67b2a323 [2023-11-23 21:31:10,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:10,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:10,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:10,728 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:10,729 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:10,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:13,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:14,172 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:14,173 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:14,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/a04909ba5/d75896ae3ea341acbdb44431f14eb935/FLAG3f82ec9e1 [2023-11-23 21:31:14,198 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/data/a04909ba5/d75896ae3ea341acbdb44431f14eb935 [2023-11-23 21:31:14,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:14,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:14,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:14,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:14,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:14,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a556d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14, skipping insertion in model container [2023-11-23 21:31:14,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:14,493 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i[916,929] [2023-11-23 21:31:14,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:14,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:14,600 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-97.i[916,929] [2023-11-23 21:31:14,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:14,680 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:14,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14 WrapperNode [2023-11-23 21:31:14,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:14,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:14,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:14,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:14,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,778 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111 [2023-11-23 21:31:14,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:14,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:14,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:14,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:14,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:14,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:14,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:14,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:14,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (1/1) ... [2023-11-23 21:31:14,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:14,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:14,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:31:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:14,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:14,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:15,065 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:15,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:16,505 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:16,558 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:16,558 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:16,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:16 BoogieIcfgContainer [2023-11-23 21:31:16,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:16,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:16,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:16,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:14" (1/3) ... [2023-11-23 21:31:16,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a737262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:16, skipping insertion in model container [2023-11-23 21:31:16,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:14" (2/3) ... [2023-11-23 21:31:16,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a737262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:16, skipping insertion in model container [2023-11-23 21:31:16,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:16" (3/3) ... [2023-11-23 21:31:16,571 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-97.i [2023-11-23 21:31:16,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:16,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:16,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:16,660 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53f36e64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:16,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:31:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 21:31:16,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:16,685 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:16,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:16,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1665797993, now seen corresponding path program 1 times [2023-11-23 21:31:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691494279] [2023-11-23 21:31:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:16,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:16,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:31:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:16,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:31:16,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-11-23 21:31:17,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:17,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:17,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691494279] [2023-11-23 21:31:17,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691494279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:17,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:17,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087196553] [2023-11-23 21:31:17,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:17,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:31:17,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:31:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:31:17,064 INFO L87 Difference]: Start difference. First operand has 47 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:31:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:17,281 INFO L93 Difference]: Finished difference Result 91 states and 164 transitions. [2023-11-23 21:31:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:31:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 107 [2023-11-23 21:31:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:17,296 INFO L225 Difference]: With dead ends: 91 [2023-11-23 21:31:17,296 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:31:17,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:31:17,306 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:17,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:31:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:31:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-23 21:31:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:31:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2023-11-23 21:31:17,391 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 69 transitions. Word has length 107 [2023-11-23 21:31:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:17,392 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 69 transitions. [2023-11-23 21:31:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-23 21:31:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2023-11-23 21:31:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 21:31:17,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:17,399 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:17,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:17,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 717923881, now seen corresponding path program 1 times [2023-11-23 21:31:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654753035] [2023-11-23 21:31:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:17,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:17,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:31:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:17,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:31:17,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-23 21:31:17,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:17,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654753035] [2023-11-23 21:31:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654753035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:17,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:31:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528539595] [2023-11-23 21:31:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:17,950 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 21:31:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:18,680 INFO L93 Difference]: Finished difference Result 133 states and 205 transitions. [2023-11-23 21:31:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 107 [2023-11-23 21:31:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:18,689 INFO L225 Difference]: With dead ends: 133 [2023-11-23 21:31:18,691 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 21:31:18,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:18,694 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 62 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:18,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 125 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:31:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 21:31:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 51. [2023-11-23 21:31:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:31:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions. [2023-11-23 21:31:18,721 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 107 [2023-11-23 21:31:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:18,724 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 78 transitions. [2023-11-23 21:31:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-23 21:31:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions. [2023-11-23 21:31:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 21:31:18,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:18,727 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:18,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:18,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:18,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:18,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash 660665579, now seen corresponding path program 1 times [2023-11-23 21:31:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727231757] [2023-11-23 21:31:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:18,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:18,938 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:18,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:31:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:19,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:31:19,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 348 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-23 21:31:19,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-11-23 21:31:20,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:20,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727231757] [2023-11-23 21:31:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727231757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:31:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081159834] [2023-11-23 21:31:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:31:20,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:31:20,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:31:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:20,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:31:20,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 337 proven. 45 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-23 21:31:20,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-11-23 21:31:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1081159834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:31:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242786371] [2023-11-23 21:31:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:21,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:21,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:21,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:31:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:21,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:31:21,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 350 proven. 48 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 21:31:22,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 96 proven. 48 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-23 21:31:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242786371] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:31:22,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:31:22,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12, 9, 15, 12] total 24 [2023-11-23 21:31:22,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093763249] [2023-11-23 21:31:22,578 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:31:22,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:31:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:31:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:31:22,583 INFO L87 Difference]: Start difference. First operand 51 states and 78 transitions. Second operand has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (36), 6 states have call predecessors, (36), 12 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 21:31:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:24,953 INFO L93 Difference]: Finished difference Result 140 states and 202 transitions. [2023-11-23 21:31:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 21:31:24,955 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (36), 6 states have call predecessors, (36), 12 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 107 [2023-11-23 21:31:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:24,958 INFO L225 Difference]: With dead ends: 140 [2023-11-23 21:31:24,958 INFO L226 Difference]: Without dead ends: 90 [2023-11-23 21:31:24,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 615 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=565, Invalid=1327, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 21:31:24,962 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 169 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:24,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 163 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:31:24,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-23 21:31:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2023-11-23 21:31:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 21:31:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2023-11-23 21:31:24,987 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 107 [2023-11-23 21:31:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:24,989 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2023-11-23 21:31:24,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 7 states have call successors, (36), 6 states have call predecessors, (36), 12 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2023-11-23 21:31:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2023-11-23 21:31:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 21:31:24,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:24,992 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:25,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:25,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:25,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 765702707, now seen corresponding path program 1 times [2023-11-23 21:31:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554008339] [2023-11-23 21:31:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:25,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:25,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:25,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:25,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4815c1-910b-4780-973c-0d88d8e66f38/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:31:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:25,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:31:25,709 INFO L285 TraceCheckSpWp]: Computing forward predicates...